Nut-lock.



No. 783,572. PATENTED FEB. 28, 1905.

C. Wl GIBBS,

NUT LOCK.

APPLICATION FILED NOV. 29, 1904.

N Ff/gl,

Ff/g5, F/(Lcjf.

INVENTOR ATTO R N EY lijnrrisn @marries Patented February' 28, 191WATENT FFME.,

(fil--l'fliltLltS 1N. (3l-1BRS, CF BRIDGEPCR'I, CONNECIICU'I,r-lSlGilOlt 'lO C()- lIUMBle. NUT AND BOLT COltLPANY, OF BRIDGICPCRI,CONNECTICUT,

A CCRPCRA'IICN CF NEW" YORK.

IWLJTWLM.

SPECIFICATION forming part of Letters Patent No. 733,572, dated February28, 1905.

Application filed November 29, 1904. Serial No, 234,730. i

To all 1071/0111/ 'if/1 711/07/ concer/1,:

fle it known that I, Cuantas WV. Ginnaa citizen of the United States,residing at Bridge port, county o'lI Fairlield, State el Connecticut,have inventei'l a new and useful Lock-N ut, ol which the following is aspecilication.

My invention relates to the class ot locknuts in which a threaded sleeveforming an integral part ol one member is compressed upon a bolt by theother member to lock the nut in place, and has lor its object to improvethe construction ol this class olf nuts by providing, in addition to theusual incline upon the sleeve, quick-acting inclines upon the conwtiguous 'faces oiIl the members which act to give a quick linal compression tothe sleeve by which the nut is more securely locked in place.

W ith this and other objects in View 1 have devised the simple and noveltwo-part locknut, of which the following description, in connection withthe accompanying drawings, is a specification, reference charactersbeing used to indicate the several parts.

Figure 1 is an elevation illustratingtlle use oi' my novel lock-nut, theparts being in the locking position; Fig. 2, an end elevationcorresponding therewith, the work being' omitted; Fig. 3, a sectionalview, the bolt being in elevation, showing the Female member set up toplace and the male member about to be placed in engagement therewith;liig. 4f, a similar view showing the male member set up to the lockingposition, and Figs. 5 and G are elevations of slightly-variant forms ol:the male member detached.

A, denotes the female member as a whole; l, the male member; C, a bolt,and D work that is being held by the bolt and nut. The female member isprovided with a threaded portion to engage a bolt with anoutwardlytapering recess 11 and in its outer lace with an abrupt orq11iel(aczti1ig inwardly-extending incline 12, which runs into recess l1and may be either a straight line, as seen in section, or aslightly-concave curve, as preferred. The male member is threaded itsentire length to engage a bolt and is provided with a sleeve 13, whichis `tapered externally to correspond with the taper ol recess 1l in thelemale member and with an abrupt or quiek-aeting incline 111, which maybe either a straight incline, as in Fig. G, or a slightly-concave curve,in Fig. 5, the taper oi' this incline correspmnling, ot' course, withthe taper olI incline 12 upon the iemale member, so as to give thegreatest possible amount of engaging surface. 'l5 denotes a slot whichextends the entire length olAK the male member. The male member is alsoprovided with an (.Xternal groove 1G d iametrically opposite the slot 15to give contractile resiliency to said member, so that :it will grip thebolt tightly even should it be slightly under size when it is tightenedup.

The ope 'ation is as follows: The .female member is applied lirst and isset up against the work. lhe male member is then turned up against ituntil the tapering sleeve has lirm bearing upon the tapering recess inthe female member. A wrench is then applied to both members, and theyare set up togethe against the work. After the nut as a whole has beenset up against the work the wrench is applied to the male member only,and that is set np as tightly as possible, the eli'ect ot' which is,through the engagement o'lI abrupt incline 14 on the male member withthe correspomling inwardly-extending incline 12 on the female niember,to compress the slot in the male member and cause the male member tegrip the thread ol the bolt tightly, so that the nut cannot become looseunder the ordinary or even extraordinary conditions ol use. Alt shouldbe noted that the sleeve upon the male member is slightly shorter thanthe depth of the recess in the female member, so that the end ot' thesleeve will not quite touch the bottom ofA the recess, and inelines 12and le are free to act with their lull el'iieet to compress the malemember on the bolt. To loosen the nut, the wrench is lirst applied tothe male member, which is given a turn more or less backward to loosenit, the resiliency of the metal causing' it to expand the instant thepressure ot' the inelines upon the male member against the correspondinginclines on the Vfemale member is relieved. The wrench is then recess,said male member having also an abrupt quick-acting inclinecorresponding with the incline in the outer face of the female I5member, a slot extending its entire length, and an external groovediametricall y opposite the slot, substantially as described, for thepurpose specied.

In testimony whereof I aiix my signature in 2O presence of twowitnesses.

CHARLES W. GIBBS.

Witnesses:

FRED ATWATER, A. M. WoosTER.

